iMac update for Mac OS X 10.1.5 – Macitynet.it
The update only concerns Macs that use Mac OS X 10.1.5 build 5T91, (to see what the current version, use Info on this Mac from the Apple menu and click on the line where the Mac OS – 10.1 version is indicated. 5: the build number will appear).
The iMac Update includes improvements to support the installation of third-party applications and the Network Update that improves the network and Internet access after restarting the computer or when you exit from the Stop state.
It is possible to download the update from this page on the Apple website, of course it works with both the English and Italian systems.